out of memory

[Malhabib]

THCudaCheck FAIL file=/tmp/luarocks_cutorch-scm-1-5292/cutorch/lib/THC/generic/THCStorage.cu line=66 error=2 : out of memory
/home/alhabib/torch/install/bin/lua: ./densecap/optim_updates.lua:69: cuda runtime error (2) : out of memory at /tmp/luarocks_cutorch-scm-1-5292/cutorch/lib/THC/generic/THCStorage.cu:66
stack traceback:
[C]: in function 'new'
./densecap/optim_updates.lua:69: in function 'adam'
train.lua:123: in main chunk
[C]: in function 'dofile'
...abib/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:150: in main chunk
[C]: in ?
I'm using Ubuntu 16.04 , Nvidia GTX 745, any idea how to solve, even when i tried to use CPU it gives me the same error....Thaks